In the new game Dos Rios from Mayfair Games, players work to be the first to build four houses and a hacienda. Along they way, they also build dams to change the flow of the rivers. You can win a free copy of this game if you finish first in the latest About.com Board/Card Game Forum Dream Game. The rules are simple, and, honestly, there's no good reason you shouldn't enter today. The deadline is 8:00 a.m. eastern U.S. time on Saturday, June 5, 2004.